fix: 修复 5 项确定 bug + Provider UX 重做 + 文档统一

Bug fixes:
- fix(dao): AsyncSession.delete 补齐漏掉的 await（provider/user/individual 共 4 处）
- fix(worker): result.data.output → result.output.output（pydantic-ai 1.x API 适配）
- fix(api): 删除 create_worker_from_template 死端点（ORM 字段不匹配必崩）
- fix(api): /provider/test 按 provider_type 分支适配 Anthropic/Gemini/OpenAI 三种协议
- fix(chat): SSE 流式聊天在 distributed 模式 fallback 到非流式，避免 asyncio.Queue 序列化崩溃

Features (previously unstaged):
- feat(provider): Provider 管理页重做（品牌图标、5 种类型、Test Connection、编辑模式）
- feat(provider): 新增 Gemini provider_type 支持
- feat(workflow): Finalize 节点输出 blackboard 摘要 + 失败原因；步骤完成/失败实时推送 SSE
- feat(i18n): regulatory_node 提示词从路由模式改为直接对话模式（中英双语）
- feat(consciousness): dynamic_prompt 支持 locale 国际化
- feat(logs): SystemLogsView 自动刷新 + 暂停按钮

Docs:
- docs: README/README-EN 统一为"开源通用多 Agent 协作平台"口径
- docs: ROADMAP 按 v0.1.x / v0.2.x / v0.3.x 重组
- docs: project.md 重写为结构化项目介绍

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

kilostar/api/provider.py

@@ -27,7 +27,7 @@ provider_router = APIRouter(prefix="/api/v1/provider", tags=["provider"])
 class ProviderRegister(BaseModel):
     """``POST /provider`` 入参：注册一个模型 Provider 的最小字段集。"""
 
-    provider_type: Literal["openai", "claude", "deepseek"]
+    provider_type: Literal["openai", "claude", "deepseek", "gemini"]
     provider_title: str
     provider_url: str
     provider_apikey: str
@@ -72,6 +72,63 @@ async def get_provider_list(
     return {"provider_list": masked}
 
 
+@provider_router.post("/test")
+async def test_provider_connection(
+    provider_register: ProviderRegister,
+    _: TokenData = Depends(Accessor.get_current_user),
+) -> Dict[str, Any]:
+    """测试 Provider 连接：按 provider_type 选择对应协议拉取模型列表。"""
+    import httpx
+
+    ptype = provider_register.provider_type
+    url = provider_register.provider_url
+    apikey = provider_register.provider_apikey
+
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            if ptype == "claude":
+                endpoint = f"{url}/v1/models"
+                headers = {
+                    "x-api-key": apikey,
+                    "anthropic-version": "2023-06-01",
+                }
+                response = await client.get(endpoint, headers=headers)
+                if response.status_code == 200:
+                    data = response.json()
+                    models = [m["id"] for m in data.get("data", [])]
+                    return {"success": True, "models": sorted(models), "model_count": len(models)}
+                return {"success": False, "error": f"HTTP {response.status_code}", "models": []}
+
+            elif ptype == "gemini":
+                endpoint = f"{url}/models"
+                params = {"key": apikey}
+                response = await client.get(endpoint, params=params)
+                if response.status_code == 200:
+                    data = response.json()
+                    models = [m.get("name", "").removeprefix("models/") for m in data.get("models", [])]
+                    return {"success": True, "models": sorted(models), "model_count": len(models)}
+                return {"success": False, "error": f"HTTP {response.status_code}", "models": []}
+
+            else:
+                if "/v1" not in url:
+                    endpoint = f"{url}/v1/models"
+                else:
+                    endpoint = f"{url}/models"
+                headers = {
+                    "Authorization": f"Bearer {apikey}",
+                    "Content-Type": "application/json",
+                }
+                response = await client.get(endpoint, headers=headers)
+                if response.status_code == 200:
+                    data = response.json()
+                    models = [m["id"] for m in data.get("data", [])]
+                    return {"success": True, "models": sorted(models), "model_count": len(models)}
+                return {"success": False, "error": f"HTTP {response.status_code}", "models": []}
+
+    except Exception as e:
+        return {"success": False, "error": str(e), "models": []}
+
+
 @provider_router.delete("/{provider_title}")
 async def delete_provider(
     provider_title: str,